# List of public sector organisations in Chennai

Tamtam tracks 31 public sector organisations headquartered in Chennai. This list ranks the 30 largest by number of employees on LinkedIn, led by Indian Bank, Indian Institute of Technology, Madras and INDIAN OVERSEAS BANK. Their median headcount is 801. Half of them were founded in 1968 or later.

This list comprises public sector organizations in Chennai, primarily focusing on banking, higher education, and justice administration. Key organizations include Indian Bank, offering diverse financial services, and the Indian Institute of Technology, Madras, a prominent institution for technological education and research. Other notable entities are Anna University Chennai, specializing in engineering and technology, and the High Court of Madras, a historic legal institution.

A significant pattern observed is the concentration of these entities within a few core public sectors. For instance, the banking sector is represented by Indian Bank and INDIAN OVERSEAS BANK, while higher education features prominently with institutions like the University of Madras. This indicates a strong public sector presence in these service-oriented fields in Chennai.

🇮🇳 Chennai · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Indian Bank](https://www.tamtam.ai/c/indian-bank) (indianbank.bank.in)<br>Offers diverse financial services including deposits, loans, cards, and remittances across India and internationally, serving various customer segments. | Banking | 🇮🇳 Chennai | 16,376 | 1907 |
| 2 | [Indian Institute of Technology, Madras](https://www.tamtam.ai/c/indian-institute-of-technology-madras) (iitm.ac.in)<br>An institute of national importance offering higher technological education, research, and consultancy services with a focus on engineering and pure sciences | Higher Education | 🇮🇳 Chennai | 9,505 | 1959 |
| 3 | [INDIAN OVERSEAS BANK](https://www.tamtam.ai/c/indian-overseas-bank) (iob.bank.in)<br>Government-backed public sector bank providing financial services with majority ownership from the Government of India | Banking | 🇮🇳 Chennai | 7,711 | 1937 |
| 4 | [Anna University Chennai](https://www.tamtam.ai/c/anna-university-chennai) (annauniv.edu)<br>Higher education in engineering, technology, architecture, applied sciences with focus on research and industry-academia collaboration for societal needs. | Higher Education | 🇮🇳 Chennai | 7,705 |  |
| 5 | [invalid15094330](https://www.tamtam.ai/c/invalid15094330) (annauniv.edu)<br>An educational institution offering higher education in engineering, technology, and allied sciences, promoting research, and fostering cooperation between academia and industry | Higher Education | 🇮🇳 Chennai | 3,330 |  |
| 6 | [High Court of Madras](https://www.tamtam.ai/c/high-court-of-madras) (tn.nic.in)<br>A historic high court in Tamil Nadu, India, established in 1862 under Queen Victoria's Letters patent, serving as a key legal institution | Administration of Justice | 🇮🇳 Chennai | 2,268 |  |
| 7 | [United India Insurance Co. Ltd.](https://www.tamtam.ai/c/united-india-insurance-co-ltd) (uiic.co.in)<br>A government-owned general insurance company in India offering a range of insurance products and services to customers | Insurance | 🇮🇳 Chennai | 2,138 |  |
| 8 | [University of Madras](https://www.tamtam.ai/c/university-of-madras) (unom.ac.in)<br>Higher education institution offering a wide range of courses with experienced faculty focused on quality education and student development. | Higher Education | 🇮🇳 Chennai | 1,933 |  |
| 9 | [Indian Overseas Bank](https://www.tamtam.ai/c/indian-overseas-bank-chennai) (iob.bank.in)<br>An established public sector bank in India, dedicated to serving the nation with financial services since 1937 | Banking | 🇮🇳 Chennai | 1,478 |  |
| 10 | [High Court of Judicature at Madras](https://www.tamtam.ai/c/high-court-of-judicature-at-madras) (hcmadras.tn.nic.in)<br>Established in 1862, the High Court of Judicature at Madras is the highest court in Tamil Nadu, exercising original and appellate jurisdiction | Administration of Justice | 🇮🇳 Chennai | 1,201 | 1862 |
| 11 | [TANGEDCO](https://www.tamtam.ai/c/tangedco) (gov.in)<br>The company is a leading energy provider and distributor established in 1957, restructured in 2008 to include subsidiary companies for transmission, generation, and distribution | Government Administration | 🇮🇳 Chennai | 1,093 |  |
| 12 | [Central Institute of Plastics Engineering & Technology (CIPET)](https://www.tamtam.ai/c/central-institute-of-plastics-engineering-and-technology-cipet) (cipet.gov.in)<br>An autonomous institute in India offering training and services in the field of plastic engineering, including design, processing, testing, and consultancy | Education Administration Programs | 🇮🇳 Chennai | 1,044 | 1968 |
| 13 | [Chennai](https://www.tamtam.ai/c/chennai) (chennaimetrorail.org)<br>The company operates a rapid transit system in Chennai, India, providing efficient transportation services to the city's residents and visitors | Truck Transportation | 🇮🇳 Chennai | 881 | 2007 |
| 14 | [Tamilnadu Newsprint and PapersLimtied](https://www.tamtam.ai/c/tamilnadu-newsprint-and-paperslimtied) (tnpl.com)<br>A producer of newsprint and paper products based in Tamil Nadu, specializing in printing and writing papers for various industries | Paper and Forest Product Manufacturing | 🇮🇳 Chennai | 829 |  |
| 15 | [CSIR - Central Leather Research Institute](https://www.tamtam.ai/c/csir-central-leather-research-institute) (clri.org)<br>A pioneering institute in India dedicated to advancing research, technology, education, and innovation in the leather sector for economic growth and global leadership | Research Services | 🇮🇳 Chennai | 801 | 1948 |
| 16 | [Tamil Nadu Veterinary and Animal Sciences University](https://www.tamtam.ai/c/tamil-nadu-veterinary-and-animal-sciences-university) (tanuvas.tn.nic.in)<br>The organization focuses on education, research, and extension activities in veterinary, animal, fisheries, food, and dairy sciences to benefit farmers | Higher Education | 🇮🇳 Chennai | 692 |  |
| 17 | [MMTC Limited](https://www.tamtam.ai/c/mmtc-limited) (mmtclimited.com)<br>India's largest trading giant with extensive international trade network, specializing in import-export operations, promoting joint ventures for market opportunities worldwide | Wholesale Import and Export | 🇮🇳 Chennai | 689 | 1963 |
| 18 | [NPTEL](https://www.tamtam.ai/c/nptel) (nptel.ac.in)<br>Provides free high-quality digital education resources, including courses in engineering, science, arts, and technology, empowering learners across India to acquire essential skills and knowledge. | E-Learning Providers | 🇮🇳 Chennai | 660 | 1999 |
| 19 | [Chennai Metro Rail Limited](https://www.tamtam.ai/c/chennai-metro-rail-limited) (chennaimetrorail.org)<br>Special Purpose Vehicle implementing Chennai Metro Rail Project, now a Joint Venture of Government of India and Tamil Nadu | Rail Transportation | 🇮🇳 Chennai | 640 | 2007 |
| 20 | [Madras Medical College (MMC)](https://www.tamtam.ai/c/madras-medical-college-mmc)<br>This company is a historic medical institution established in 1664, providing healthcare services, medical education, and research in Chennai, India | Higher Education | 🇮🇳 Chennai | 593 | 1835 |
| 21 | [Indira Gandhi Centre for Atomic Research (IGCAR)](https://www.tamtam.ai/c/indira-gandhi-centre-for-atomic-research-igcar) (igcar.ernet.in)<br>A research organization located in Kalpakkam, Chennai, India, focusing on atomic research and technological advancements in the field | Research Services | 🇮🇳 Chennai | 511 | 1971 |
| 22 | [Indian Ordnance Factories](https://www.tamtam.ai/c/indian-ordnance-factories) (ofbindia.gov.in)<br>The company specializes in producing, testing, and marketing a wide range of products for land, sea, and air systems with a focus on research and development | Aviation and Aerospace Component Manufacturing | 🇮🇳 Chennai | 444 |  |
| 23 | [National Institute of Ocean Technology](https://www.tamtam.ai/c/national-institute-of-ocean-technology) (niot.res.in)<br>An autonomous institute under the Ministry of Earth Sciences in India specializing in developing ocean technologies for sustainable resource utilization and environmental management | Research Services | 🇮🇳 Chennai | 418 | 1993 |
| 24 | [Indian Institute of Information Technology Design & Manufacturing Kancheepuram](https://www.tamtam.ai/c/indian-institute-of-information-technology-design-and-manufacturing-kancheepuram) (iiitdm.ac.in)<br>A Center of Excellence for design and manufacturing engineering education and research established by the Government of India | Higher Education | 🇮🇳 Chennai | 368 | 2007 |
| 25 | [Central Institute of Petrochemicals Engineering & Technology (CIPET)](https://www.tamtam.ai/c/central-institute-of-petrochemicals-engineering-and-technology-cipet) (cipet.gov.in)<br>The company offers education and training for skilled labor in the plastics and polymer science fields, as well as product development and mold production services | Education Administration Programs | 🇮🇳 Chennai | 353 | 1968 |
| 26 | [TIDEL Park Limited](https://www.tamtam.ai/c/tidel-park-limited) (tidelpark.com)<br>Information technology park in Chennai, part of key infrastructure projects transforming Tamil Nadu with a focus on IT development and economic growth | Real Estate | 🇮🇳 Chennai | 349 | 2000 |
| 27 | [STANLEY MEDICAL COLLEGE & HOSPITAL (Inst. Code - 002), CHENNAI](https://www.tamtam.ai/c/stanley-medical-college-and-hospital-inst-code-002-chennai) (stanleymedicalcollege.ac.in)<br>A medical institution affiliated with the government providing healthcare services, medical education, and research opportunities | Hospitals and Health Care | 🇮🇳 Chennai | 347 | 1740 |
| 28 | [Tamilnadu Electricity Board](https://www.tamtam.ai/c/tamilnadu-electricity-board) (tangedco.gov.in)<br>A government-owned power generation and distribution company based in Tamil Nadu, India | Utilities | 🇮🇳 Chennai | 341 |  |
| 29 | [College of Engineering, Guindy](https://www.tamtam.ai/c/college-of-engineering-guindy) (ceg.annauniv.edu)<br>A higher education institution located in Chennai, India, offering engineering programs from its campus at Anna University in Guindy | Higher Education | 🇮🇳 Chennai | 337 | 1794 |
| 30 | [Anna University](https://www.tamtam.ai/c/anna-university) (annauniv.edu)<br>A public state university in Chennai, India, founded in 1978, named after a former Chief Minister of Tamil Nadu | Higher Education | 🇮🇳 Chennai | 337 |  |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

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Source: https://www.tamtam.ai/l/public-sector-organisations-chennai